V60 is a world of experimentation. Look forward to some mind blowing cups and for seemingly no good reason at all sometimes, a "wow, would have been better off with Starbucks today" cup
I'll reiterate that grind size is easily the most important variable.
Give a little Rao swirl right after your bloom pour, keep your water temp toasty for your lighter roasts, and consider trying cafec abaca filters to allow you to push your grind a bit finer.
Have fun tinkering, you're going to stumble onto some really great brews!